#ifndef __EXCHANGE_H__
#define __EXCHANGE_H__

#include "common.h"
typedef enum
{
  straight,
  bend,
}Road;

extern uint8 Slow_flag;
extern int Speed_Start;
extern uint8 Zero_flag, Zero_num, Stop_Flag, Starting_line, PO_Flag, late_PO_Flag, fly, stop, PO_over;
extern char Rx_buff[20];
extern Road road;
extern uint8 front_checked_line, checked_front_car;

extern void Exchange();
extern void Judge();

#endif